ACL Bearings 1B1663H-01 Race Series Rod Bearing Small Block Chevy Honda Journal .001 Under

The ACL Bearings 1B1663H-01 is a high-performance Race Series connecting rod bearing designed for Small Block Chevy applications using Honda rod journal specifications. This precision-engineered bearing features a 1.890-inch Honda journal diameter and is sized .001 inch under standard size (0.0005 inch thinner per half) to provide optimal bearing clearance for performance crankshafts.

Race Series Performance Features:

• High-strength trimetal construction with reduced overlay thickness for superior fatigue resistance
• Hardened steel backing improves bearing lining support and retention in the housing
• Increased crush design ensures positive bearing retention under high-RPM conditions
• Flash plating eliminated from bearing backs to maximize heat transfer and housing grip
• Increased eccentricity compensates for bore distortion at high RPM and assists hydrodynamic oil film formation
• Tight wall tolerances maintain consistent bearing clearances
• Enlarged ID chamfers accommodate large fillet radius performance crankshafts

ACL Race Series bearings are trusted by professional engine builders and racers worldwide, from drift racing to NASCAR, IHRA, and NHRA competitions. The unique combination of advanced metallurgy, precision engineering, and performance-oriented design delivers exceptional durability and load-carrying capacity in high-performance and racing applications. Compatible with Small Block Chevy 350 and 400 cubic inch engines using Honda-sized rod journals.